CN209196065U - A kind of hydrostatic stepless speed change device - Google Patents
A kind of hydrostatic stepless speed change device Download PDFInfo
- Publication number
- CN209196065U CN209196065U CN201821488364.9U CN201821488364U CN209196065U CN 209196065 U CN209196065 U CN 209196065U CN 201821488364 U CN201821488364 U CN 201821488364U CN 209196065 U CN209196065 U CN 209196065U
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- China
- Prior art keywords
- pump
- motor
- cylinder
- speed change
- plate
- Prior art date
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- Withdrawn - After Issue
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- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 14
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Abstract
The utility model relates to a kind of speed change gear, specifically a kind of hydrostatic stepless speed change device belongs to speed change gear technical field.It includes shell, valve body, motor spindle and pump main shaft, reel cage, pump swash plate and pump stroke reversal disk are successively arranged between case inside wall and pump cylinder, pump flexural pivot, pump needle roller and pump spring are successively arranged between pump main shaft and pump cylinder, pump spring is pressed on pump stroke reversal disk by pump needle roller by flexural pivot is pumped, it pumps and is equipped with pump piston shoes between swash plate and pump stroke reversal disk, pump stroke reversal disk will pump piston shoes head and be pressed on pump swash plate, and pump piston shoes front end connects pump plunger；By positioning pin connection pump port plate in valve body, pump port plate side is compressed by pump cylinder.The utility model structure is simple, compact, reasonable, and installation is safeguarded, is easy to use；Using the support of piston shoes static pressure and return plate return structures, increase the service life of hydrostatic transmission.
Description
Technical field
The utility model relates to a kind of speed change gear, specifically a kind of hydrostatic stepless speed change device belongs to speed change
Engineering device technique field.
Background technique
In the prior art, small-scale agricultural machinery such as rice transplanter, spraying machine, small harvester etc. is used because installation space is small
Hydraulic variable speed unit be no piston shoes type structure, the shortcomings that this structure be it is small using pressure, output torque is insufficient, Bu Nengman
The domestic different farm work operating condition of foot.And have the hydraulic variable speed unit of piston shoes structure, although output is turned round using pressure height
Square is big, but because overall dimension is larger, cannot be mounted in small-scale agricultural machinery, therefore constrain the development of small-scale agricultural machinery.
Summary of the invention
In place of the purpose of this utility model is to overcome above-mentioned deficiency, so that a kind of hydrostatic stepless speed change device is provided,
Using the support of piston shoes static pressure and return plate return structures, increase the service life of hydrostatic transmission.
According to technical solution provided by the utility model, a kind of hydrostatic stepless speed change device includes shell, valve body, motor
Main shaft and pump main shaft, shell and valve body by linking into an integrated entity before and after connector, in shell up and down distribution setting motor spindle with
Main shaft is pumped, motor spindle and pump rear-end of spindle stretch out valve body, pump and connect pump cylinder on main shaft, be along the circumferential direction equipped in pump cylinder
Multiple pump plunger shaft consents, pump plunger shaft consent is interior to be equipped with pump plunger；Connect motor cylinder on motor spindle, in motor cylinder along the circumferential direction
Equipped with multiple motor piston holes, motor piston is equipped in motor piston hole, it is characterized in that: between case inside wall and pump cylinder according to
It is secondary to be equipped with reel cage, pump swash plate and pump stroke reversal disk, it pumps and is successively arranged pump flexural pivot, pump needle roller and pump spring between main shaft and pump cylinder,
Pump spring is pressed on pump stroke reversal disk by pump needle roller by flexural pivot is pumped, and is pumped and is equipped with pump piston shoes, blowback between swash plate and pump stroke reversal disk
Journey disk will pump piston shoes head and be pressed on pump swash plate, and pump piston shoes front end connects pump plunger；Matched in valve body by positioning pin connection pump
Flow table, pump port plate side are compressed by pump cylinder；Pump port plate is equipped with the pump dispensing window of multiple strips, and multiple pumps are matched
Oily window is circumferentially distributed；
Motor swashplate and motor return plate, motor cylinder and motor master are successively arranged between case inside wall and motor cylinder
Motor flexural pivot, motor needle roller and motor spring are successively arranged between axis, motor spring is compressed motor flexural pivot by motor needle roller
On motor return plate；Motor piston shoes are equipped between motor swashplate and motor return plate, motor return plate is by motor piston shoes head
It is pressed on motor swashplate, motor piston shoes front end connects motor piston；Pass through positioning pin connection motor valve plate, motor in valve body
Valve plate side is compressed by motor cylinder, and motor valve plate is equipped with the motor dispensing window of multiple strips, multiple motors
Dispensing window is circumferentially distributed；
Valve body is equipped with oil transportation channel, and the pump dispensing window on pump port plate is respectively communicated with pump plunger shaft consent and oil transportation channel,
Motor dispensing window on motor valve plate is respectively communicated with motor piston hole and oil transportation channel.
Further, motor spindle front and back end is rotatablely connected shell and valve by preceding needle bearing and rear needle bearing respectively
Body.
Further, pump main shaft front and back end is rotatablely connected shell and valve body by ball bearing and needle bearing respectively.
Further, pump cylinder center line is overlapped with pump spindle centerline.
Further, motor cylinder center line is overlapped with motor spindle center line.
Further, reel cage side connects rocking bar, and rocking bar stretches out shell.
Further, multiple bearing shells are equipped between reel cage and case inside wall.
Further, it pumps and keeps an inclination angle between swash plate and pump cylinder.
Further, an inclination angle is kept between motor swashplate and motor cylinder.
Compared with the prior art the utility model has the advantage that
The utility model structure is simple, compact, reasonable, and installation is safeguarded, is easy to use；It is supported and is returned using piston shoes static pressure
Journey disk return structures, increase the service life of hydrostatic transmission.
Detailed description of the invention
Fig. 1 is the utility model main view.
Fig. 2 is valve body side view.
Fig. 3 is motor valve plate main view.
Fig. 4 is pump port plate main view.
Fig. 5 is B-B cross-sectional view in Fig. 1.
Description of symbols: needle roller after needle bearing, 6- before 1- shell, 2- valve body, 3- motor spindle, 4- pump main shaft, 5-
Bearing, 7- motor swashplate, 8- motor return plate, 9- motor piston shoes, 10- motor piston hole, 11- motor cylinder, 12- ball bearing,
13- needle bearing, 14- pump swash plate, 15- pump stroke reversal disk, 16- pump piston shoes, 17- pump plunger shaft consent, 18- pump cylinder, 19- motor flow
Disk, 20- motor piston, 21- pump plunger, 22- reel cage, 23- pump port plate, 24- pump dispensing window, 25- bearing shell, 26- rocking bar,
27- pumps flexural pivot, 28- pump needle roller, 29- pump spring, 30- motor flexural pivot, 31- motor needle roller, 32- motor spring, 33- motor with oil
Window, 34- oil transportation channel.
Specific embodiment
The utility model will be further described in conjunction with the embodiment in attached drawing below:
As shown in Fig. 1 ~ 5, the utility model mainly includes shell 1, valve body 2, motor spindle 3 and pump main shaft 4.1 He of shell
Valve body 2 before and after connector by linking into an integrated entity, and motor spindle 3 and pump main shaft 4, motor spindle 3 is arranged in distribution up and down in shell 1
Valve body 2 is stretched out with pump 4 rear end of main shaft.
3 front and back end of motor spindle is rotatablely connected shell 1 and valve by preceding needle bearing 5 and rear needle bearing 6 respectively
Body 2.4 front and back end of pump main shaft is rotatablely connected shell 1 and valve body 2 by ball bearing 12 and needle bearing 13 respectively.
It pumps and connects pump cylinder 18 on main shaft 4, be along the circumferential direction equipped with multiple pump plunger shaft consents 17, pump plunger shaft consent in pump cylinder 18
Pump plunger 21 is equipped in 17,18 center line of pump cylinder is overlapped with pump 4 center line of main shaft.
Reel cage 22, pump swash plate 14 and pump stroke reversal disk 15,22 He of reel cage are successively arranged between 1 inner sidewall of shell and pump cylinder 18
Multiple bearing shells 25 are equipped between 1 inner sidewall of shell, bearing shell 25 can reduce the friction of reel cage 22 during the swing.Reel cage 22 1
Side connects rocking bar 26, and rocking bar 26 stretches out shell 1, is able to drive reel cage 22 by rocking bar 26 and swings.
Pump flexural pivot 27, pump needle roller 28 and pump spring 29, pump spring 29 is successively arranged between pump main shaft 4 and pump cylinder 18 to pass through
Pump needle roller 28 is pressed on flexural pivot 27 is pumped on pump stroke reversal disk 15.It pumps and is equipped with pump piston shoes 16, pump between swash plate 14 and pump stroke reversal disk 15
Return plate 15 will pump 16 head of piston shoes and be pressed on pump swash plate 14, and pump 16 front end of piston shoes connects pump plunger 21.
An inclination angle is kept between the pump swash plate 14 and pump cylinder 18, which drives reel cage 22 to swing reality by rocking bar 26
Now adjust.
By positioning pin connection pump port plate 23 in valve body 2,23 side of pump port plate is compressed by pump cylinder 18.Such as Fig. 3
Shown, pump port plate 23 is equipped with the pump dispensing window 24 of multiple strips, and multiple pump dispensing windows 24 circumferentially divide
Cloth.
Motor cylinder 11 is connected on motor spindle 3, is along the circumferential direction equipped with multiple motor piston holes 10 in motor cylinder 11,
Motor piston 20 is equipped in motor piston hole 10,11 center line of motor cylinder is overlapped with 3 center line of motor spindle.
Motor swashplate 7 and motor return plate 8, motor cylinder 11 are successively arranged between 1 inner sidewall of shell and motor cylinder 11
Motor flexural pivot 30, motor needle roller 31 and motor spring 32 are successively arranged between motor spindle 3, motor spring 32 is rolled by motor
Motor flexural pivot 30 is pressed on motor return plate 8 by needle 31.Motor piston shoes 9 are equipped between motor swashplate 7 and motor return plate 8,
9 head of motor piston shoes is pressed on motor swashplate 7 by motor return plate 8, and 9 front end of motor piston shoes connects motor piston 20.It is described
An inclination angle is kept between motor swashplate 7 and motor cylinder 11.
By positioning pin connection motor valve plate 19 in valve body 2,19 side of motor valve plate is compressed by motor cylinder 11.
Motor valve plate 19 is equipped with the motor dispensing window 33 of multiple strips, and multiple motor dispensing windows 33 circumferentially divide
Cloth.
Valve body 1 is equipped with oil transportation channel 34, and the pump dispensing window 24 on pump port plate 23 is respectively communicated with 17 He of pump plunger shaft consent
Oil transportation channel 34, the motor dispensing window 33 on motor valve plate 19 are respectively communicated with motor piston into 10 and oil transportation channel 34.
The working principle of the utility model is: at work, pump main shaft rotation drives pump cylinder rotation, due to pump swash plate and
The collective effect of pump stroke reversal disk makes pump piston shoes be close to pump swash plate always, and pump piston shoes drive pump plunger to transport in pump cylinder plunger hole
It is dynamic, complete oil-absorbing process when pump plunger moves to lowest point from top point, pump plunger moves upwards as oil extraction process, by pumping cylinder
Hydraulic oil in scapus consent passes through the dispensing window of pump port plate, flows into the oil transportation channel of valve body, hydraulic oil is matched by motor
Dispensing window on flow table flows into the motor cylinder plunger hole of motor cylinder, and hydraulic oil pushes motor piston, due to motor piston shoes
With the effect of motor swashplate, motor cylinder rotation is driven, while motor spindle being driven to rotate, realizes the output of torque.Work as motor
Pressure oil process is completed when plunger moves to top point from lowest point, the hydraulic oil in motor cylinder plunger hole passes through motor valve plate
The dispensing window of the other side flows into the other side oil transportation channel of valve body, and hydraulic oil is using the pump port plate other side with oily window
Mouthful, pump cylinder plunger hole is flowed into, the above are pump main shaft, motor spindles respectively to complete to rotate a circle, and realizes an oil suction oil extraction process.
The utility model structure is simple, compact, reasonable, and installation is safeguarded, is easy to use；It is supported and is returned using piston shoes static pressure
Journey disk return structures, increase the service life of hydrostatic transmission.
Claims (9)
1. a kind of hydrostatic stepless speed change device, including shell (1), valve body (2), motor spindle (3) and pump main shaft (4), shell
(1) and valve body (2) before and after connector by linking into an integrated entity, and motor spindle (3) and pump main shaft are arranged in distribution up and down in shell (1)
(4), valve body (2) are stretched out in motor spindle (3) and pump main shaft (4) rear end, connect pump cylinder (18) on pump main shaft (4), pump cylinder
(18) it is along the circumferential direction equipped with multiple pump plunger shaft consents (17) in, is equipped with pump plunger (21) in pump plunger shaft consent (17)；Motor spindle (3)
Upper connection motor cylinder (11), motor cylinder (11) is interior to be along the circumferential direction equipped with multiple motor piston holes (10), motor piston hole
(10) motor piston (20) are equipped in, it is characterized in that: being successively arranged reel cage between shell (1) inner sidewall and pump cylinder (18)
(22), swash plate (14) and pump stroke reversal disk (15) are pumped, pumps and is successively arranged pump flexural pivot (27), pump between main shaft (4) and pump cylinder (18)
Needle roller (28) and pump spring (29), pump spring (29) will pump flexural pivot (27) by pump needle roller (28) and be pressed on pump stroke reversal disk (15)
On, it pumps and is equipped with pump piston shoes (16) between swash plate (14) and pump stroke reversal disk (15), pump stroke reversal disk (15) will pump piston shoes (16) head pressure
Tightly on pump swash plate (14), pump piston shoes (16) front end connection pump plunger (21)；Pass through positioning pin connection pump port plate in valve body (2)
(23), pump port plate (23) side is compressed by pump cylinder (18)；Pump port plate (23) is equipped with the pump of multiple strips with oil
Window (24), multiple pump dispensing windows (24) are circumferentially distributed；
Motor swashplate (7) and motor return plate (8), motor cylinder are successively arranged between shell (1) inner sidewall and motor cylinder (11)
Motor flexural pivot (30), motor needle roller (31) and motor spring (32), motor bullet are successively arranged between body (11) and motor spindle (3)
Motor flexural pivot (30) is pressed on motor return plate (8) by spring (32) by motor needle roller (31)；Motor swashplate (7) and motor return
Motor piston shoes (9) are equipped between journey disk (8), motor piston shoes (9) head is pressed on motor swashplate (7) by motor return plate (8),
Motor piston shoes (9) front end connects motor piston (20)；By positioning pin connection motor valve plate (19) in valve body (2), motor is matched
Flow table (19) side is compressed by motor cylinder (11), and motor valve plate (19) is equipped with the motor dispensing window of multiple strips
(33), multiple motor dispensing windows (33) are circumferentially distributed；
Valve body (2) is equipped with oil transportation channel (34), and the pump dispensing window (24) on pump port plate (23) is respectively communicated with pump plunger shaft consent
(17) and oil transportation channel (34), the motor dispensing window (33) on motor valve plate (19) be respectively communicated with motor piston hole (10) and
Oil transportation channel (34).
2. a kind of hydrostatic stepless speed change device as described in claim 1, it is characterized in that: the motor spindle (3) front and back end
It is rotatablely connected shell (1) and valve body (2) respectively by preceding needle bearing (5) and rear needle bearing (6).
3. a kind of hydrostatic stepless speed change device as described in claim 1, it is characterized in that: the pump main shaft (4) front and back end is logical
It crosses ball bearing (12) and needle bearing (13) and is rotatablely connected shell (1) and valve body (2) respectively.
4. a kind of hydrostatic stepless speed change device as described in claim 1, it is characterized in that: the pump cylinder (18) center line with
Main shaft (4) center line is pumped to be overlapped.
5. a kind of hydrostatic stepless speed change device as described in claim 1, it is characterized in that: the motor cylinder (11) center line
It is overlapped with motor spindle (3) center line.
6. a kind of hydrostatic stepless speed change device as described in claim 1, it is characterized in that: the connection of the reel cage (22) side is shaken
Bar (26), rocking bar (26) stretch out shell (1).
7. a kind of hydrostatic stepless speed change device as described in claim 1, it is characterized in that: the reel cage (22) and shell (1)
Multiple bearing shells (25) are equipped between inner sidewall.
8. a kind of hydrostatic stepless speed change device as described in claim 1, it is characterized in that: the pump swash plate (14) and pump cylinder
(18) inclination angle is kept between.
9. a kind of hydrostatic stepless speed change device as described in claim 1, it is characterized in that: the motor swashplate (7) and motor
An inclination angle is kept between cylinder body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821488364.9U CN209196065U (en) | 2018-09-11 | 2018-09-11 | A kind of hydrostatic stepless speed change device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821488364.9U CN209196065U (en) | 2018-09-11 | 2018-09-11 | A kind of hydrostatic stepless speed change device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209196065U true CN209196065U (en) | 2019-08-02 |
Family
ID=67405950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821488364.9U Withdrawn - After Issue CN209196065U (en) | 2018-09-11 | 2018-09-11 | A kind of hydrostatic stepless speed change device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209196065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953544A (en) * | 2018-09-11 | 2018-12-07 | 无锡威孚精密机械制造有限责任公司 | A kind of hydrostatic stepless speed change device |
-
2018
- 2018-09-11 CN CN201821488364.9U patent/CN209196065U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953544A (en) * | 2018-09-11 | 2018-12-07 | 无锡威孚精密机械制造有限责任公司 | A kind of hydrostatic stepless speed change device |
| CN108953544B (en) * | 2018-09-11 | 2024-02-27 | 无锡威孚精密机械制造有限责任公司 | Hydrostatic stepless speed change device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190802 Effective date of abandoning: 20240227 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190802 Effective date of abandoning: 20240227 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |